[COFF, ARM64] Add support for Windows ARM64 COFF format

Summary:
This is the llvm part of the initial implementation to support Windows ARM64 COFF format.
I will gradually add more functionality in subsequent patches.

Reviewers: ruiu, rnk, t.p.northover, compnerd

Reviewed By: ruiu, compnerd

Subscribers: aemerson, mgorny, javed.absar, llvm-commits, kristof.beyls

Differential Revision: https://reviews.llvm.org/D34705

llvm-svn: 306490

1 files changed, 37 insertions, 0 deletions

diff --git a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64WinCOFFStreamer.cpp b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64WinCOFFStreamer.cpp
new file mode 100644
index 00000000000..6c8da27e398
--- /dev/null
+++ b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64WinCOFFStreamer.cpp
@@ -0,0 +1,37 @@
+//===-- AArch64WinCOFFStreamer.cpp - ARM Target WinCOFF Streamer ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "AArch64WinCOFFStreamer.h"
+
+using namespace llvm;
+
+namespace {
+
+class AArch64WinCOFFStreamer : public MCWinCOFFStreamer {
+public:
+  friend class AArch64TargetWinCOFFStreamer;
+
+  AArch64WinCOFFStreamer(MCContext &C, MCAsmBackend &AB, MCCodeEmitter &CE,
+                        raw_pwrite_stream &OS)
+      : MCWinCOFFStreamer(C, AB, CE, OS) {}
+};
+} // end anonymous namespace
+
+namespace llvm {
+MCWinCOFFStreamer
+*createAArch64WinCOFFStreamer(MCContext &Context, MCAsmBackend &MAB,
+                              raw_pwrite_stream &OS,
+                              MCCodeEmitter *Emitter, bool RelaxAll,
+                              bool IncrementalLinkerCompatible) {
+  auto *S = new AArch64WinCOFFStreamer(Context, MAB, *Emitter, OS);
+  S->getAssembler().setIncrementalLinkerCompatible(IncrementalLinkerCompatible);
+  return S;
+}
+
+} // end llvm namespace